Derrick.



E. EREVIGK.

DERRICK.

APPLICATION FILED MAY 4, 1911. 1,007,776. Patented Nov.'?, 1911.

2 SHEETS-SHEET 1.

coLuMBm PLANOGRAI'II co wAsHmli'roN. u. C

E. EREVICK.

DERRICK.

APPLICATION FILED MAY 4, 1911.

1,007,776. Patented Nov. 7, 1911.

2 SHEETSSHEET 2.

EINER EREVICK, 0F CLARKFIELD, MINNESOTA.

DERRICK.

oowve.

Specification of Letters Patent.

Application filed May 4, 1911.

Patented Nov. '7, 1911.

Serial No. 624,928.

To all whom it may concern:

Be it known that I, Emnn Ennvron, a subject of the King of Norway,residing at Clarkfield, in the county of Yellow Medicine and State ofMinnesota, have invented certain new and useful Improvements inDerricks; and I do hereby declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same.

My invention has for its object to provide an improved derrick,especially adapted for use in lifting wagon boxes and racks.

To the above ends, the invention consists of the novel devices andcombinations of devices hereinafter described and defined in the claims.

In the accompanying drawings which illustrate the invention, likecharacters indicate like parts throughout the several views.

Referring to the drawings, Figure 1 is a view of the improved device inside elevation, some parts being broken away, and the exposed parts insection, and with other parts illustrated by dotted lines; Fig. 2 is aplan view of the same; Fig. 3 is a detail view, on an enlarged scale, ofa portion of the lower end of the device, some parts being broken awayand the exposed parts shown in section; and, Fig. 4 is a detail view, onan enlarged scale, of one of the socalled grapples.

The numeral 1 indicates a base support for the improved device, and ispreferably made up of a pair of crossed timbers having secured, at theirextreme outer portions, castings 2 and which castings, in turn, aresecured to any suitable support, not shown, by means of bolts, orotherwise. Secured to the upper surface of the base 1, by means ofscrews, or otherwise, is a casting 3 having an upwardly projecting stud4 on which is telescoped the lower end of an upwardly projecting column5, preferably, as shown, in the form of a pipe. The column 5 is securedon the central casting 3 in an upright position by means of a pluralityof upwardly and inwardly projecting brace rods 6. These brace rods, attheir upper ends, are secured to the column 5 by means of a collar 7 andtheir lower ends are secured to the end castings 2. Secured to each endcasting 2 is a hanger bracket 8 and which brackets support and hold anannular anchoring track 9, the piirpose of which will presently appear.Swiveled to the upper end of the column 5, is a bifurcated fulcrum-head10, having a depending stem 11 working within the column 5. Ahorizontally extended channel shaped bracket 12 is pivoted to the prongsof the fulcrum-head 10 by means of a pivot pin 13. Mounted on thebracket .12, between its side flanges, is a long lever 14 in the form ofa beam. This lever 14 is secured to the bracket 12 for endwiseadjustment by means of a pair of nutted bolts 15 secured to the bracket12 and passed through any one pair of a series of holes 16 formed in thelever 14. Depending hooks 17 and and 18 are secured one to each end ofthe lever 14. To the hook 17 is secured a multiplicity of dependingchains 19, as shown, four in number, each having secured to its lowerend a grapple 20. Each of these grapples 20 is provided with anin-turned and upwardly projecting serrated lifting edge, which is madeadjustable in different vertical positions by lengthening and shorteningthe chains 19. The adjustment of the chains 19 is accomplished bypassing their free ends through eyes formed in the grapple hooks 20 andproviding the same with hooks 21 that are engageable with any one of thelinks of the chains 19. For the purpose of illustrating the grapples 20in operative positions, a wagon body has been indicated by means ofdotted lines with the grapples supporting the same at its ends andsides.

The lever 14 is operated by means of a lifting device, preferably, asshown, in the form of a block and tackle such as is commonly used forstretching wire, said device being self-locking at any point. Thelifting device is indicated as an entirety by the numeral 22 and it isnot thought necessary for the purpose of this case to describe the samein detail as its operation is well known. The lifting device 22 issuspended from a hook 18 of the lever 14 by means of a link and itslower end is connected to a wheel bracket 23 on which is journaled aflanged wheel 24 mounted to run upon the underside of the track 9 andacts as a movable anchor for the lifting device. After a load has beenlifted by the grapples to any desired height, it may be swung into adifferent horizontal position by rotating the lever 14 with respect tothe column 5. As the lever 14 is rotated, the flanged wheel 24 willtravel on the track 9, thereby always keeping the pulling devicedirectly under the lever 14.

The above device, While extremely simple, is thought to be highlyeflicient for the purposes had in view.

What I claim is:

1. In a device of the kind described, the combination with a columnhaving an annular track section, of a lever of the first class pivotedand swiveled to said column and having at one end a grapple, a groovedwheel adapted to run upon said track and detachably seated thereon, abracket secured to said wheel, and a pulling device connecting the otherend of said lever to said wheel bracket, substantially as described.

2. In a device of the kind described, the

combination with a column having a sup;

porting base, radially projecting brackets secured to said supportingbase, and an annular track section secured to anddepending from saidbrackets, of a lever of the first class plvoted and swiveled to saidcolumn and having at one end a grapple, a grooved wheel adapted to runupon said track and detachably seated thereon, a bracket secured to saidwheel, and a pulling device connecting the other end of said lever tosaid wheel bracket, substantially as described.

3. In a device of the kind described, the combination with a columnhaving an annular track section, of a head rotatively mounted in theupper end of said column, a bracket pivotally connected to said head, alever of the first class secured to said bracket for longitudinaladjustment and having at one end a grapple, a grooved wheel adapted torun upon said track and having a bracket, and a pulling deviceconnecting the other end of said lever to said wheel bracket,substantially as described.

In testimony whereof I afiix my signature in presence of two witnesses.

' EINER EREVIGK.

lVitnesses:

JACOB AMUNnsoN, Lnwrs MoNsnN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

